Carton



March 26, 1940. M. H. MuMFoRD CARTON Filed Feb. l, 1959 3 Sheets-Sheet lMarch 26, 1940.

M. H. MUMFORD n 2,194,669

`GARTON Filed Feb. 1, 1959 s sheets-sheet 2 7 Inventor l Melvin] HMwmcre A Home ys March 26, 1940. M, H. MuMFoRD CARTON Filed Feb. l, 1939 3Sheets-Sheet 5 Illia;

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A iorneys Patented Mar.. 26, 1940 mila..

amputation retmary i, 193e, sensi No. 25am 8 Claims.

The present invention relates to cardboard or corrugated paper cartonsor boxes designed primarily for use in packing and shipping flat glassarticles, and has for its primary object to provide a shipping containerof this character in which the side and end edges are formed of innerand outercontinuously extending strips of cardboard material, whereby tosimplify the construction of the carbon and to provide increasedstrength for the edge portions thereof to prevent breakage of the glasscontained therein.

A further object 'is to provide a carton of this character in'which'theparts may be formed of blanks of adesired size and easily and quicklyassembled when needed to enclosefragile material, such as plate glass,for shipping purposes.

A still further object is to provide an article of this character whichmay be manufactured,

at relatively low cost, and which is otherwise m well adapted for thepurposes for which the same is intended.

Other objects and advantages reside in the details of construction asmore fully hereinafter describedgand claimed, reference being had to theaccompanying drawings forming part hereof, wherein like numerals referto like parts throughout, and in whichl Figure l is a perspective viewof the completed u y carton. 'M Figure 2 is a top plan view showing oneend open prior to sealing the same.

Figure 3 is a fragmentary sectional view taken substantially on aline'f--d of Figure L Figure `4 is a similar view taken substantiallywon a line d-i of Figure Il. l

Figure A5 is a fragmentary sectionalv view through one end of the cartonwith the inner sealing strip removed. Figure 6 is a perspective view ofone of the il@ walls of the carton.

Figure 7 is a plan view' of the blank forming the outer sealing strip.

Figure 8 is a similar view of the inner sealing strip, and

ed Figure 9 is a perspective viewA of the reinforcing strip.

Referring now to the drawings-in detail, the numeral 5 designates one ofthe main walls of the carton which is of substantially rectangular 50form and constructed preferably of corrugated cardboard, two of saidwalls being employedin d the construction of the carton, the walls beingsecured in spaced parallelism, and constituting the wp and bottom wallsthereof ,when the carl s ton occupies the position as shown in Figurel.

In assemblingthe carton I employ'an inn-er sealing strip 6 and an outersealing strip l, each of these strips Abeing constructed of elongatedstripsof corrugated cardboard and are folded along transverse linesindicated at.V 3 to provide end Walls 9 and side walls It, theinnersealing strip t being positioned around the marginal edges of thesheet iof material 5 and each of the Wall sections 9 and i@ are oldablealong their longitudinal edges aS shown at i l to form in' m' turnedflanges i2 adapted for flatwise engagement with the opposed faces ofKthe two wall sections 5. The edges of the flanges it are notched as at83 in the region of the transverse fold lines t inv order that theabutting edges of the iianges w yof/.tlrie side and end walls will forma mitered fit as shown at IQ. K 4

The anges i2 may be secured to the inneropposed surfaces of the wallsections 5 by bluing or in any other suitable manner, one of the wall 20sections as indicated at i5, remaining unsecured, as shown in Figure 2of the drawings, until the' article to be shipped in the cartonis sealedtherein. The inner sealing strip S thus serves to secure the wallsections 5 in spaced parallel relaf gs tion.

The outer sealing strip l is identical in construction' to thesealingstrip t except for the provision of a tab 4extension it onone endthereof, the end wall sections of the outer sealing stripl 30 beingdesignated bythe numeral l1 While-the side wall sections are designatedat I8 separated by the transverse fold lines i9 and the longitudinallyextending flaps are indicated at 2U, which are-foldable'along thelongitudinal fold line 2i. a The ends of the flanges Ziirare likewiseformed with the mitering edges 22.'

The outer sealing strip 'i is adapted to surround the marginal edges ofthe sheet 5as well as the inner sealing stript and the anges 2b 4@ areturned inwardly and secured against the outler surfaces of said sheet ofmaterial, either by gluing `or by stapling the same in 4position. as

shown at 2t. l

Interposed between the inner sealing strip 6 45 and the outersealingstrip 'i is a reinforcing strip of cardboard 2t provided withtransverse fold lines 25 to form the end'and side edges of the carton,the sealing strips 6 andc'l being preferably .formed of corrugatedcardboard, while the rein- 5o forcing strip 2d is preferably formed'ofsolid cardboard. I

When the strips are secured in position along three of the sides of thecarton as' shown in Figure 2, the remaining portion of the inner sealing strip designated bythe numeral i and the remaining portion of theouter sealing strip -designated. by the numeral 2S as well as the freeend portion of the reinforcing strip as shown at 2l cooperate to form aclosure for the remaining edge ofthe carton and after the sheet of plateglass or other object is placed within the open end of the carton, thesefree end portions may then be closed in a manner corresponding to theotheredge portions of the carton and the ap it inserted between theadjacent sealed edges of the strip whereby to completely seal all openedges of the carton. v

lt will be understood that the -outer sealing strip may be constructedof sumcient width to enable the flanges 2t to overlap the side walls ofthe carton a desired distance to provide the necessary reinforcement forthe sheets of material forming the walls'.

it is believed the details of construction and manner oi assembling theparts of the device will be readily understood from the foregoingwithout further detailed explanation.

Having thus described the invention, what claim is- 1. A packing boxcomprisinga pair of co-extensive iiat sheets of material forming a pairof the opposed walls of the box and sealing strips forming the side andend walls of the box and including an inner strip spacing the sheets inparallelism and an outer strip surrounding the edges of said sheets andsaid inner strip each of said strips including portions iiatwiseengaging each sheet, the said portions being secured to opposite facesof the respective sheets.

2. A packing box comprising a pairof co-extensive flat sheets ofmaterial forming a pair of the opposed walls of the box and continuouslyformed sealingstrips forming the side and end walls of the box andincluding an inner strip spacing the sheets in parallelism and an outerstrip surrounding the edges of said sheets and covering said inner stripeach of said strips including portions iatwise engaging each sheet, thesaid portions being secured to opposite faces of tire respective sheets.

3.`A pacng box comprising a pair ofco-extensive at sheets of materialforming a pair of the opposed walls of the box and continuously formedsealing strips forming the/ side and end walls of the box and includingan inner strip spacing the sheets in parallelism and an outer stripsurrounding the edges of said sheets and covering said inner strip, bothof said sealing strips having inturned flanges secured respectively tothe opposite surfaces "if each ofthe sheets.

4. A packing box comprising a pair of co-extensive flat sheets ofmaterial forming a pair of the opposed walls oi vthe box andcontinuously formed sealing strips forming the side and end walls of thebox. and including an inner strip spacing the sheets in parallelism andan outer strip surrounding the edges of said sheets and covering saidinner strip, both of said sealing strips having inturned flanges securedrespectively to the opposite surfaces of each of the sheets and areinforcing strip surrounding the edges of the sheets and interposedbetween said inner and outer strips.

5. in a packing box, a pair of col-extensive :dat sheets of materialforming two of the opposed walls of the box, an inner elongated striphaving portions foldable along transverse lines to form continuous sideand end'l walls and also having portions foldable along longitudinallines to form inturned anges secured to the opposed faces of therespectivesheets to space the sheets apart and an outer elongated striphaving portions foldable along transverse and longitudinal lines similarto the inner strip and surrounding the side and end walls, the inturnediianges of the outer strip being secured to the outer surfaces of saidsheets;

6. iin a packing box, a pair of co-extensive at sheets of materialforming two of the opposed walls of the box, an inner elongated striphaving portions foldable along transverse lines to form continuous sideand end Walls and also having portions foldable along longitudinal linesto form inturned anges secured to the opposed faces of the respectivesheets tospace the sheets apart and an outer elongated strip havingportions foldable along transverse and longitudinal lines.

similar to theQ inner strip and surrounding the side and end walls, theinturned iianges of the formed reinforcing strip interposed between thesaid inner and outer strips.

7. In a packing box, a pair of co-extensive flat .sheets of materialforming two of the opposed walls of the bo'x, an inner elongated striphaving portions oldable along transverse lines to form continuous sideand end walls and also having portions foldable along longitudinal linesto form inturned anges secured to the opposed faces of the respectivesheets to space the sheets apart and an outer elongated strip havingportions foldable along transverse and'longitudinal lines similar to theinner strip and surrounding the side and end walls, the inturned flangesof the outer strip being secured to the outer'surfaces of said sheets,and an elongated continuously formed reinforcing lstrip interposedbetween the said inner and outer strips and a tab on one end of saidouter strip adapted for insertion between the opposite end ofsaid stripand the adjacent end of the reinforcing strip.

8. in a packing box, a'pair of coextensive sheets of material and a pairof channel strips, one of said strips extending around the marginaledges 'of the sheets and securedI to the inner faces of the sheets formaintaining the sheets in spaced relation and the other o f said channelstrips surrounding the edges of said sheetsand the first named strip andsecured to the outersurfaces of said sheets.

imam i- RY ORD.

